ZEV Technologies Small Frame Glock Extended Magazine Release Gen 1-3 9mm/.40/.357/.45 GAP Black. These ZEV Technologies Pistol Parts are machined from billet aluminum and hard anodized to resist corrosion and abrasion bringing you a durable and lightweight addition to your pistol. This ZEV Technologies 1st-3rd Gen Small Extended Mag Release is incredibly easy to install and features a textured button face for simple activation. Enhance your reloading experience by outfitting your firearm with the ZEV Technologies 1st-3rd Gen Glock Extended Mag Release. Please note that this product is NOT designed for Gen 4 Glock models and it will NOT fit the Glock 36. Specifications for ZEV Technologies Small Frame Glock Extended Magazine Release: Manufacturer: ZEV Technologies Gun Make: Glock Color: Black Finish: Anodized Fabric/Material: Aluminum Size: Small Condition: New Caliber: 9mm Luger Features of ZEV Technologies Small Frame Glock Extended Magazine Release CNC Aircraft Quality Billet Aluminum Magazine release Package Contents: ZEV Technologies Small Frame Glock Extended Magazine Release Allen Wrench What firearm models does the manufacturer say ZEV Technologies Small Frame Glock Extended Magazine Release is compatible with? The manufacturer suggests that ZEV Technologies Small Frame Glock Extended Magazine Release is compatible with Glock 19 Gen 4 Glock 18 Gen 4 Glock 20 Gen 4 Glock 21 Gen 4 Glock 22 Gen 4 Glock 26 Gen 4 Glock 17 Gen 4 Glock 27 Gen 4 Glock 30 Gen 4 Glock 31 Gen 4 All Glock Gen 1-3 except Glock 42 Glock 43ZEV Technologies MR-SM-3G-B: Small Frame Glock Extended Magazine Release Gen 1-3 9mm/.40/.357/.45 GAP Black